Custom branding not working
It probably makes sense to discuss problems one by one instead of dumping a bunch of things together.
What options are you missing? On your screenshot I see the right attribute. Maybe you forgot to click "Add"?
Sorry, I forgot to click add. For some reason, I thought that the value of the attribute is to be entered in that greyed out box and that's what threw me off.
I got things working with the custom branding files in an override directory and the creation of attributes. I see the custom logo in the login screen. On Windows in my dev environment, I see the custom favicon in the browser tab, but on the same application running on a Linux server, I don't see the custom favicon. I tried deleting the browser cache and doing a hard refresh.
I'm pretty sure it's just cache.
I tried to follow the instructions here (https://www.traccar.org/branding-web/) for implementing custom branding but I'm experiencing issues. I created an override directory and including custom branding files there with the file names as instructed, but the custom icon and logo isn't showing up in my Traccar application. Then, I tried uploading logo files in the server settings in the application's user interface, but nothing seems to happen. Also, when I try to set parameters in the attributes section of the server setting and I select the "Logo Image" attribute, there are no options like what's shown in the documentation linked above (see screenshot below). Am I missing something? Has anyone else experienced these issues? I'm running Traccar 6.8.1.